Although social phobia is one of the most common mental disorders in adolescents, there are few reliable and valid assessment instruments for this age group. This study examined the factor structure and psychometric properties of a brief version of the Social Phobia and Anxiety Inventory (SPAI; ) in a sample of adolescents. Although the original 45-item SPAI has excellent psychometric properties, its utility is limited by its length. We developed and piloted a brief, 16-item version of the SPAI that has good psychometric properties, assesses cognitive, behavioral, and somatic symptoms, consistent with the original scale, which may be particularly useful as a screening measure. Limitations and suggestions for future research are discussed.